I've realised my 2001 1.9 tdi Octavia doesn't have the plastic engine cover bit, do these help cut down noise at all? I've seen them on ebay for fairly cheap, would it be worth a try? my car does sound like a tractor sometimes...

 

my only hesitation is that they look like they're just plain plastic and don't seem to have any foam / insulation underneath

There is sound deadening foam on the underside, but over the years it becomes less effective, I replaced mine with some metalised backed foam from eBay and it certainly did reduce the noise level by quite a it going on the sound meter app on my phone  

Ah right nice one! Do you think you'd be able to find a link to what you used? I might get on that then! 

I think this was the stuff I used https://www.ebay.co.uk/itm/0-5m-HTX-Sound-Proofing-Heat-Insulation-Closed-Cell-Foam-Foil-Faced-Camper-10mm/252394313325?hash=item3ac3df966d:g:XygAAOSwopxcTs-b  but if you call/email the guy he will advise on the best stuff to use 

 

I've got some pictures of it installed but the forum where they are is down for an update at the moment 

 

two layers of that sound deadening  and It cut the engine noise by 6db 

great, thanks again mate, i'll try that

On 18/04/2020 at 10:11, nige8021 said:

 

two layers of that sound deadening  and It cut the engine noise by 6db 

What is the black stuff on the silver part ? 

7 hours ago, Johnnynapalm said:

What is the black stuff on the silver part ? 

I'd guess dirt from being sat on the engine block

14 minutes ago, mac11irl said:

I'd guess dirt from being sat on the engine block

 

Nope,  it was black sealant used to seal the edges to stop any oil from ingressing into the foam 

1 hour ago, nige8021 said:

 

Nope,  it was black sealant used to seal the edges to stop any oil from ingressing into the foam 

Ah ok. Makes sense. A six decibel reduction is very impressive. I'm on the job !.  Cheers